Problem: You are given three numbers. Is there a way to replace variables A, B and C with these numbers so the equality A + B = C is correct?

Input:

There are three numbers X1, X2 and X3 (1 ≤ Xi ≤ 10^100), each on a separate line of input.

Output:

Output either "YES", if there is a way to substitute variables A, B and C with given numbers so the equality is correct, or "NO" otherwise.

Sample Input:

1

2

3

Output:

YES

Sample Input:

1

2

4

Output

YES

Sample Input:

1

3

5

Output

NO

SAMPLE INPUT
1
2
3

SAMPLE OUTPUT
YES

Solution (in PYTHON):

Solution:
n1=int(input())
n2=int(input())
n3=int(input())
#if((n1+n2==n3) or (n1+n3==n2) or (n2+n3==n1)):
#	print 'YES'
if((n1+n2==n3) or (n1+n3==n2) or (n2+n3==n1) or (2*n1==n2) or (2*n1==n3) or (2*n2==n1) or (2*n2==n3) or (2*n3==n1)or(2*n3==n2)):
	print 'YES'
elif((n1==0) or(n2==0) or(n3==0)):
	print 'NO'
	
else:
	print 'NO'